Mattress



FIG. 1 is an isometric view of a top, front, and right side of anornamental design for a mattress;

FIG. 2 is an enlarged detail view of area 2, circumscribed within FIG.1;

FIG. 3 is a front elevational view of the mattress of FIG. 1;

FIG. 4 is a rear elevational view of the mattress of FIG. 1;

FIG. 5 is a right side elevational view of the mattress of FIG. 1;

FIG. 6 is a left side elevational view of the mattress of FIG. 1;

FIG. 7 is top plan view of the mattress of FIG. 1; and,

FIG. 8 is a bottom plan view of the mattress of FIG. 1.

It is understood that the dashed clover-like surface pattern and thevertical dash-dash-dash-dash broken lines on the sides of the mattressrepresent a pattern on the surface of the mattress that forms no part ofthe claimed design. Further, the remaining dash-dash-dash-dash brokenlines represent environmental structure that forms no part of theclaimed design. The dash-dot-dash-dot broken lines depict a mattresswith a symbolic break in its length and width and forms no part of theclaimed design. The appearance of any portion of the article between thebreak lines forms no part of the claimed design. The dotted patternbounded by the solid lines on the sides depicts a portion of themattress and forms no part of the claimed design.

CLAIM The ornamental design for a mattress, as shown and described.